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Curing method for composite material

A composite material and curing method technology, which is applied in the field of composite materials, can solve problems such as increased manufacturing costs and potential safety hazards, and achieve the effects of reducing production costs, improving quality, and improving safety factors

Active Publication Date: 2019-01-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the microwave high-pressure curing process, although it can reflect the high-efficiency advantages brought by microwave curing, it increases the manufacturing cost to a certain extent, and there are also certain safety hazards

Method used

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  • Curing method for composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A curing method for composite materials, including vibration pretreatment and low-pressure microwave curing, see figure 1 ,Details are as follows:

[0032]Vibration pretreatment is specifically: Vibrating the composite material parts to be processed (here T800 / X850 aviation composite materials are taken as an example) to obtain the pretreated composite material parts, wherein: the composite materials to be processed are paved in one direction Layer mode, the vibration adopts a vibration platform, which can provide a vibration frequency of 10-2000Hz, a temperature range of -70-200°C, and a vibration acceleration of not more than 50g, where g=9.8m / s; the vibration platform uses external air pressure As the power source, the air hammer is continuously used to provide a stable vibration source for the installation platform. During the vibration process, the vibration is transmitted from the installation platform to the composite material parts from bottom to top. Preferabl...

Embodiment 2-3

[0036] Compared with Example 1, Examples 2-3 are only different in the microwave heating rate, see Table 1 for details.

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Abstract

The invention provides a curing method for a composite material. The curing method comprises the following steps: vibration pretreatment; and low-pressure microwave curing. Specifically, the vibrationpretreatment is to subject a to-be-processed composite material to vibration treatment so as to obtain a pretreated composite workpiece; the microwave curing is to cure the pretreated composite workpiece under low pressure and microwave conditions; the composite workpiece is cured both in the vibration pretreatment process and the low-pressure microwave curing process. With such a technical scheme in the invention, the curing method has the following beneficial effects: the combination of vibration pretreatment and low-pressure microwave curing makes the finally prepared composite workpiece basically achieve effect under high pressure conditions in the prior art, and pressure required during molding and curing time are reduced while maintaining the excellent quality and performance of thecomposite workpiece; and thus, production cost is lowered, and a safety factor is increased.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for curing composite materials. Background technique [0002] Compared with metal materials, composite materials have higher specific strength and specific modulus, and also have excellent fatigue resistance. They are ideal materials for aerospace and other high-tech fields. The quality of the parts is difficult to guarantee, which limits the wide application of this material. [0003] At present, the most mature composite molding process is the autoclave process. The autoclave process uses heat conduction, heat convection, and heat radiation to heat the workpiece from the outside to the inside. Although the air temperature and curing pressure in the autoclave are relatively uniform during the heating process, the Since the composite material is a poor conductor of heat, when the heat is transferred from the outside to the inside of the material during heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/08
CPCB29C35/002B29C35/0805B29C2035/0855
Inventor 湛利华关成龙杨晓波蒋成标戴光明刘桂铭胡健常腾飞
Owner CENT SOUTH UNIV
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